Home / 21,779.04-30,047.60-15,062.16

Finding the Fourth Proportional to 21,779.04, 30,047.60 and 15,062.16

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Solution

The fourth proportional to 21,779.04, 30,047.60 and 15,062.16 is: 20,780.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,779.04 : 30,047.60 = 15,062.16 : x
  2. Step 2: Convert to fraction form
    21,779.04/30,047.60 = 15,062.16/x
  3. Step 3: Cross multiply
    21,779.04x = 30,047.60 × 15,062.16
  4. Step 4: Simplify right side
    21,779.04x = 452,581,758.82
  5. Step 5: Solve for x
    x = 452,581,758.82/21,779.04
  6. Step 6: Final answer
    x = 20,780.61

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.